Adhesive band system for forming a tear-off strip

Abstract

An adhesive tape system opens cardboard packaging and consists of (i) an adhesive tape A furnished on at least one side with an adhesive coating and having a carrier, the carrier having a film and having filaments extending in the longitudinal direction of the carrier, and (ii) an adhesive tape B furnished on at least one side with an adhesive coating and having a film carrier, wherein the adhesive tapes A and B are disposed one above the other.

1 . An adhesive tape system for opening cardboard packaging, the adhesive tape system consisting of (i) an adhesive tape A furnished on at least one side with an adhesive coating and having a carrier, the carrier having a film and having filaments extending in the longitudinal direction of the carrier, and (ii) an adhesive tape B furnished on at least one side with an adhesive coating and having a film carrier, the adhesive tapes A and B being disposed one above the other. 
     
     
         2 . The adhesive tape system of  claim 1 , wherein
 the filaments have been laminated onto the film.   
     
     
         3 . The adhesive tape system of  claim 1 , wherein
 the filaments are continuous filaments.   
     
     
         4 . The adhesive tape system of  claim 1 , wherein
 the filaments are disposed in a ply oriented in parallel or at most in three plies oriented in parallel.   
     
     
         5 . The adhesive tape system of  claim 1 , wherein
 the filaments consist of glass, of carbon, of combinations of both glass and carbon fiber types, of aramid fibers, of polyamide and/or of drawn polymer fibers comprising polyester fibers, polypropylene fibers, polyethylene fibers.   
     
     
         6 . The adhesive tape system of  1 , wherein
 there are between 1 and 30 filaments per centimeter width in the carrier.   
     
     
         7 . The adhesive tape system of  claim 1 , wherein a
 number of filaments is from 3 to 30 filaments.   
     
     
         8 . The adhesive tape system of  claim 1 , wherein
 in addition to the filaments extending in the longitudinal direction or machine direction, the carrier further comprises filaments which extend in cross direction and/or in diagonal direction.   
     
     
         9 . The adhesive tape system of  claim 1 , wherein
 the film is reinforced by an open laid filament scrim or an open woven filament fabric.   
     
     
         10 . The adhesive tape system of  claim 1 , wherein
 the carrier consists of a film and also of a binder layer disposed between carrier film and the layer of adhesive, the binder layer comprising untwisted and unentangled individual filaments which have been inserted in the longitudinal direction and which are fully surrounded by the binder layer.   
     
     
         11 . The adhesive tape system of  claim 1 , wherein
 the film of the adhesive tape A consists of
 mono- or biaxially oriented polypropylene 
 mono- or biaxially oriented polyethylene or 
 mono- or biaxially oriented polyester. 
   
     
     
         12 . The adhesive tape system of  claim 1 , wherein
 a film of the film carrier of the adhesive tape B is a polyolefin film oriented monoaxially in the longitudinal direction, and the film comprises a mixture of an olefinic polymer and a polar nonolefinic polymer.   
     
     
         13 . The adhesive tape system of  claim 12 , wherein,
 in the film of the adhesive tape B, a fraction of polar nonolefinic polymer in the mixture of the film of the adhesive tape is in the range from 5 to 50 wt %.   
     
     
         14 . The adhesive tape system of  claim 1 , wherein
 the film carrier of the adhesive tape B is a film of polyethylene, polypropylene, mono- or biaxially oriented polypropylene, polyester, PA, PVC, or MOPP.   
     
     
         15 . The adhesive tape system of  claim 1 , wherein
 the film carrier of the adhesive tape B has a tensile strength of 200 N/mm 2  to 300 N/mm 2 , and/or a stretchability of less than 35%.   
     
     
         16 . A method comprising:
 providing a tear strip on a carton consisting of an outer liner and an inner liner, there being at least one corrugation of card disposed between the outer and inner liners of the carton, wherein the tear strip comprising the adhesive tape system according to  claim 1 ;   applying the adhesive tape A of the adhesive tape system onto the inside of the outer liner; and   applying the adhesive tape B of the adhesive tape system onto the outside of the inner liner, so that the adhesive tape B is disposed beneath the adhesive tape A.   
     
     
         17 . The method according to  claim 16 , wherein
 the adhesive tape A and the adhesive tape B are applied in a form of a self-contained line on a body of the carton or in a form of two or more contained lines at different heights on the body of the carton.   
     
     
         18 . The method according to  claim 16 , wherein
 the adhesive tape A and the adhesive tape B are applied at right angles to the corrugation of the carton.   
     
     
         19 . The method according to  claim 16 , wherein,
 on the carton, there is a kisscut score which completely severs the adhesive tape A and which serves as a grip tab for the tear strip when the carton is torn open.   
     
     
         20 . The method according to  claim 19 , wherein
 the kisscut score is executed in a form of two limbs in a V-shape arrangement which do not contact one another at a potential intersection point.   
     
     
         21 . The method according to  claim 19 , wherein
 a diecut line joins the other two ends of the limbs, producing a form of a triangle with its apex missing.   
     
     
         22 . The method according to  claim 16 , wherein
 the tear strip resulting from the adhesive tape A and the adhesive tape B is lower in width than the adhesive tape A.   
     
     
         23 . A carton consisting of an outer liner and an inner liner, there being disposed between the liners at least one corrugation of card, furnished with the adhesive tape system according to  claim 1 , the adhesive tape A being applied on the inside of the outer liner and the adhesive tape B being applied on the outside of the inner liner, so that the adhesive tape B is disposed beneath the adhesive tape A.